Help with poop, please! (pics)

[Nikkumz]

Ok, so own of my ladies, almost positive one of my 4 week old Barred rock pullets, Is pooping kinda of odd. I looked at all the poop pics on here and i cannot tell if this would be considered the "normal frothy poop" that happens every 8 to 9 droppings...OR the abnormal "foamy poop" That mean they are sick!!! Help please! I think two of them are doing it so heres two different pics

Thanks in advance everyone!